Transfer restoring means



P 1969 D. PLACKE 3,441,211

TRANSFER RESTORING MEANS Filed July 24, 1967 FIG. 1

INVENTOR DALE L. PLACKE 1 HIS ATTORNEYS APP:l 9 I D. L. PLACKE 3,441,211

TRANSFER RESTORING MEANS Filed July 24, 1967 Sheet 2 of s INVENTOR DALEL. PLACKE 7 7 ms ATTORNEYS April 9, 1969 D. 1.. PLACKE 3,441,211

TRANSFER RESTORING MEANS Filed July 24, 196'? INVENTOR DALE L. PLACKE 7"HIS ATTORNEYS United States Patent 3,441,211 TRANSFER RESTORING MEANSDale L. Placke, Dayton, Ohio, assiguor to The National Cash RegisterCompany, Dayton, Ohio, a corporation of Maryland Filed July 24, 1967,Ser. No. 655,650 Int. Cl. G06c 7/10 U.S. Cl. 235-433 4 Claims ABSTRACTOF THE DISCLOSURE Cross reference to related application ProgrammableTotalizer Control Mechanism, United States patent application Ser. No.618,598, filed Feb. 27, 1967, by Louis E. Zurbuchen and Freeland R.Goldammer.

Background of the invention The invention is directed to a mechanism forrestoring tripped transfer mechanisms in a positive manner. Priordevices have used springs to restore the transfer mechanisms to theirhome position. An example of this type of construction is shown inUnited States Patent No. 2,628,778, issued Feb. 17, 1953, on theapplication of Maximilian M. Goldberg. Once the springs have become wornthrough use or clogged with dirt, the transfer pawls are not returned intime for the next machine operation. The mechanism of this invention isalso associated with a machine having an add-subtract totalizer in whichduring a machine operation a transfer may occur between the highestorder totalizer pinion and the lowest order totalizer pinion. It isimportant that prior to and during this operation the transfer pawls inthe amount banks be prevented from being accidentally moved.

Therefore it is an object of this invention to provide a mechanism forrestoring tripped transfer pawls in a positive manner.

It is a further object of this invention to prevent the transfer pawlsfrom being moved during a predetermined machine operation.

Summary of the invention A mechanism for restoring actuated transfermembers including a drive member mounted adjacent a transfer member andhaving a first portion which when positioned adjacent said transfermember prevents said transfer member from being actuated and a secondportion which cams the transfer member, when actuated, to its homeposition.

Brief description of the drawings FIG. 1 is a partial detailed side viewof an amount 'bank showing the transfer mechanisms utilized in thepresent embodiment.

FIG. 2 is an exploded detailed oblique view of the transfer mechanismsincluding the totalizer pinions mounted in an adjacent amount bank.

FIG. 3 is a top detailed view of the mechanisms shown in FIG. 2.

FIG. 4 is a partial detailed side view of the lowest order amount bankshowing the add-subtract totalizer pinion Patented Apr. 29, 1969 and theoverdraft mechanism utilized in the present embodiment.

FIG. 5 is a partial detailed side view of the add-subtract totalizerpinions shown in engagement with their reversing gears.

FIG. 6 is a rear view of the add-subtract totalizer pinions shown inFIG. 5.

FIG. 7 is a partial detailed front view of the overdraft trip mechanismin a position to receive amounts into the negative totalizer pinion.

FIG. 8 is a partial detailed side view of the overdraft trip mechanismin a negative position.

FIG. 9 is a partial detailed front view of the overdraft trip mechanismin a position to receive amounts into the positive totalizer pinions.

FIG. 10 is a partial detailed view of the overdraft trip mechanism in apositive position.

Description of the preferred embodiment Referring now to FIG. 1, thereis shown a partial de tailed view of an amount keybank of the transfermechanism used in the present embodiment. The machine to which thepresent invention is directed is a cash register of the type disclosedin the co-pending United States patent application of Louis E. Zurbuchenand Freeland R. Goldammer, Ser. No. 618,598, filed Feb. 27, 1967. As iswell known in this type of cash register, information set up on thekeyboard of the machine by the depression of the required keys isentered into a number of totalizers. Each totalizer has a capacity ofstoring nine units. When additional amounts are added to the totalizerwhich total more than nine, a transfer operation occurs, in which oneunit is transferred to the next higher order totalizer by the use of atransfer mechanism.

As seen in FIG. 4, the present machine includes three rows of totalizerpinions 19 and one row of add-subtract totalizer pinions 20. Each of thepinions 19, 20 utilized in the totalizers contains a tooth 21 (FIGS. 1and 2), which is wider than the other teeth 22 of the pinions. Asdeclosed more fully in the above-mentioned Zurbuchen and GoldammerUnited States patent application, Ser. No. 618,598, filed Feb. 27, 1967,one of the rows of totalizer pinions 19, 20 is raised in an upwarddirection to engage the tooth portion 23 (FIG. 4) of the primary rack 24(FIG. 3) of one of the amount rows. At this time, the primary rack hasbeen moved to a position commensurate with the amount key that has beendepressed in the amount bank. After the selected totalizer pinions haveengaged portions 23 of the primary rack, the primary racks 24 of themachine are moved to the left, to their home position. This actionrotates the engaged pinions 19, 20 counter-clockwise, as viewed in FIG.1, thereby adding the amount into the totalizer pinions. As the widetooth 21 passes from the ninth position to the zero position, it engagesand rocks clockwise an arm 25 of a transfer trip pawl 26 rotatablymounted on a stud 27 secured to a transfer pitman 50 mounted adjacentsaid trip pawl. The trip pawl 26 is normally urged counter-clockwise bya spring 28, which is connected between a right-angle end portion '30 ofthe trip pawl and an end portion 31 of a transfer latch arm 32,rotatively mounted on the stud 33, which is also supported on thetransfer pitman 50*. A second spring 34, mounted between the end portionand a right-angle stem portion 35 of a transfer arm 36, urges thetransfer arm 36 clockwise in a manner to be described more fullyhereinafter.

The latch arm 32 has a finger 37, which is normally positioned against astep 38 of the trip pawl 26 by the action of the spring 28. Upon theclockwise rotation of the trip pawl 26 'by the wide tooth of itsassociated pinion, the finger 37 of the latch arm is positioned in anupper step portion 40 of the trip pawl, thereby holding the trip pawl ina trip position. This is the position of the right-hand trip pawl shownin FIG. 1.

Referring now to FIGS. 2 and 3, there are shown an exploded view and atop view of the transfer mechanism. As shown, the transfer arm 36 isrotatively mounted on a hub portion 41 of the trip pawl 26, which inturn is mounted on the stud 27. A stud portion 42 of the transfer arm ispositioned adjacent a stop portion 43 of the trip pawl26. Under theaction of the spring 34, the transfer arm follows the movement of thetrip pawl 26. Thus the clockwise rotation of the trip pawl 26 by theaction of the wide tooth 22 results in the clockwise rocking of thetransfer arm. This positions a hook portion 44 of the transfer arm inthe path of a right-angle extension 45 of a transfer segment 46 locatedon the primary rack 47 of the next higher amount row. At this time, theprimary rack may not have returned to its home position. If this is thecase, upon returning to its home position, the rightangle extension 45cams the hook 44 of the transfer arm counter-clockwise against theaction of the spring 34. As soon as the extension 45 passes under thehook 44, the spring 34 rocks the hook 44 clockwise over the extension45.

As shown in FIGS. 1 and 3, in addition to the primary rack 24 and thetransfer elements 26, 32, and 36, each amount bank also includes thetransfer pitman 50 and a transfer restoring slide 51. The pitman isslidably supported on a pair of rack support 'bars 52. The transferrestoring slide is slidably mounted on a pair of studs 53, one of whichis shown in FIG. 1. The studs 53 are supported by the transfer pitman50.

Secured to a cam shaft 54, located below the transfer pitman 50, is atransfer cam 55. Associated with the cam is a transfer cam arm 56,rotatably mounted on a stud 57 secured to the transfer pitman 50, and atransfer pitman cam arm 58 rotatably mounted on a shaft 60, which issupported within the machine. As the cam 55 is rotated clockwise duringa machine operation, a high portion 61 of the cam engages a cam roller62, mounted on the pitman cam arm 58, rocking the cam armcounterclockwise. Movement of the cam arm 58 allows a stud 63, mountedon the cam arm, to move the transfer pitman 50 to the left, as viewed inFIG. 1. This movement of the pitman is against the action of a spring64, mounted between the pitman and a stationary comb 65.

Since the studs 27 and 33 are mounted on the pitman 50, movement of thepitman also carries the transfer trip pawl 26, the transfer latch arm32, and the transfer arm 36 in the same direction. If at this time thehook 44 (FIG. 2) of the transfer arm has engaged the extension 45 of thenext higher order transfer segment 46, the movement of the transfer arm36 moves the transfer segment in a direction which adds one unit to thetotalizer pinion 49 which is engaged with the transfer segment.

Movement of the pitman 50 also carries the transfer restoring slide 51to the left until the edge 66 of the slot 67 contacts a rear portion ofthe comb 65. Further movement of the pitman tensions a spring 68,mounted between a stud 70, secured to the pitman 50, and a second stud71, mounted on the restoring slide 51. Movement of the transfer pitmancam arm 58, in actuating the pitman 50, also rotates a transferrestoring arm 72, rotatably mounted on a stud 73, due to the action of aspring 74, connected between the restoring arm and the cam arm.Counterclockwise rotation of the restoring arm 72 positions its tail 75against the transfer restoring slide 51, thereby preventing furthermovement of the slide to the left, as viewed in FIG. 1.

Further clockwise rotation of the cam 55 moves the high portion 61 ofthe cam away from the cam roller 62. This allows the spring '64 to movethe transfer pitman to the right, which positions a lower extension 76of the pitman over a high portion 69 of the transfer latch arm 32, thuspreventing any movement of the latch arm from occurring while the pitmanis moving towards and in this position. This action thus locks thetransfer trip mechanism in their positions while an overdraft operationoccurs.

As previously described, the machine is equipped with an add-subtracttotalizer 20 (FIG. 4), which is usually referred to as a crossfooter.The crossfooter consists of a plurality of sets of plus and minustotalizer pinions, there being one set for each amount row. Amountsentered into the plus or minus pinions are subtracted from the amountscontained in the other pinion. When the amount entered exceeds theamount existing on the other pinion, an overdraft occurs. Referenceshould be made to the United States patents, No. 1,791,907, issued Feb.10, 1931, on the application of Bernis M. Shipley, and No. 2,175,346,issued Oct. 10, 1939, on the application of Maximilian M. Goldberg, fora full disclosure of the operation and construction of the crossfooter.As disclosed in these patents, whenever an overdraft occurs in theoperation of the crossfooter, a one is added to the cents amount row inorder to constitute either a true negative amount or a true positiveamount in the crossfooter. A brief description of the mechanism foradding a one in the cents amount bank will now be given.

Referring now to FIG. 4, there is shown a partial detailed side view ofthe cents amount bank. As disclosed previously, in addition to the threerows of pinions 19, there is mounted in the machine a line ofcrossfooter pinions indicated as 20. As shown more clearly in FIGS. 5and 6, each set of crossfooter pinions consists of a plus totalizerpinion 77 and a minus totalizer pinion 78. Associated with each of thesepinions is a set of reversing pinions 80, 81. The reversing pinion 80engages the plus totalizer pinion 77, while the reversing pinion 81engages the minus totalizer pinion 78. The reversing pinion 80 issecured to a shaft 82, on which is mounted a reversing gear 83, whilethe reversing pinion 81 is secured to a shaft 84, on which is mounted areversing gear 85. As best seen in FIG. 6, both reversing gears 83, 85engage each other. With this arrangement, whenever one of the plus orminus totalizer pinions is rotated, the other totalizer pinion isrotated in the opposite direction. Thus, to subtract from thecrossfooter, one adds into the minus pinions. Reference should be madeto the above-mentioned Shipley and Goldberg references for a completedisclosure of the operation of the crossfooter.

Referring now to FIGS. 7 through 10, there are shown detailed views ofthe plus and minus totalizer pinions 77, 78, located in the highestorder amount bank. FIG. 7 is a front view of the crossfooter, showingthe minus totalizer pinions 78 engaged by the primary racks 24, whileFIG. 9 shows a plus totalizer pinion 77 engaged by the primary rack 24.As disclosed fully in the abovementioned Shipley and Goldbergreferences, the line of crossfooter pinions 20 is shifted to positioneither the plus or the minus totalizer pinion so as to be engaged by theprimary rack 24. This shifting of the crossfooter is determined by thetransaction key depressed on the keyboard. Associated with thecrossfooter is an overdraft trip mechanism which consists of trip pawls86, 87 secured together and an overdraft arm 88, pinned to an overdraftshaft 90. The shaft 90 extends between the gigliest order amount bankand the lowest order amount The overdraft shaft 90 is normally in one oftwo possible positions and indicates whether the crossfooter contains apositive amount or a negative amount. If the crossfooter contains apositive amount, the overdraft shaft is in the Plus, or positive,position (FIG. 10). If the crossfooter contains a negative amount, theoverdraft shaft is in the Minus, or negative, position (FIG. 9). If theamount in the crossfooter is positive, the plus totalizer pinion 77contains the true amount, and the minus totalizer pinion 78 contains thenines complement of this amount to 999,999.99. If a sufiiciently largeamount is sub- '5 tracted from the crossfooter, an overdraft occurs. Theamount in the crossfooter becomes negative, and the minus totalizerpinions contain the true negative amount after one cent has been addedautomatically to the totalizer pinion in the cents amount bank. This onecent is automatically generated when the overdraft shaft 90 1'0- tatesfrom its positive position to the negative position.

If an amount is added to the crossfooter and the negative amount againbecomes positive, the overdraft shaft 90 turns from negative position topositive position. Again one cent is generated and added to the amounton the plus totalizer pinion to make the necessary one-cent correction.When an amount is added to either of the plus or minus totalizerpinions, they are rotated counterclockwise, as viewed in FIG. 8. As seenin FIG. 9, when the totalizer pinion 77 travels from the ninth positionto the zero position, a wide tooth 91, located on the minus pinion 78,rocks the overdraft trip pawl 87 counterclockwise and the overdraft arm88 and the overdraft shaft 90 clockwise. This moves the overdraft arm 88from a negative position (shown in dotted lines in FIG. to a positiveposition. The overdraft shaft is similarly moved from a negativeposition to a positive position.

The movement of the trip pawl 87 is limited by a stud 92, which ismounted between parallel abutments 93 located on the top portion of thetrip pawl.

When an amount is entered into the minus pinions 78 (FIG. 7), the pinionis rotated counter-clockwise. When the minus pinion goes from the ninthposition to the zero position, a tooth 94, mounted on a wide hub portion95 of the minus pinions 78, engages the trip pawl 86 (FIG. 8) and rocksit clockwise. Since the pawl 86 is riveted to the pawl 87, this actionof the pawl 86 rotates the trip pawl 87 clockwise and the overdraft arm88 and the shaft 90 counter-clockwise. This moves the overdraft arm 88and the shaft 90 from a positive position (shown in dotted lines in FIG.8) to a negative position.

Referring now to FIG. 4, the overdraft shaft 90, mounted adjacent thecents amount bank, is shown with a toggle arm '96 pinned to it. A secondtoggle arm, 97, rotatively mounted on the shaft 90, is also mounted on astud 98, secured to a cents transfer trip arm 100. A pair of springs101, connected between the toggle arms 96 and 97, allows the toggle armsto act as a link connected between the shaft 90 and the trip arm 100.Mounted on the front of the trip arm 100 is a stud 102, which ispositioned within a C-shaped slot 103, located in the cents transferpitman 104. Depending on whether the shaft 90 is in a plus or a minustrip position, the stud 102 will be in the lower or upper portion of theslot 103. As shown in FIG. 4, the shaft 90 is in the minus position.Upon the clockwise rotation of the shaft '90, the cents transfer triparm 100 is rocked counter-clockwise, thereby cam ming alatch-positioning arm 105 counter-clockwise, above a stud 106, mountedon the pitman 10'4. Counterclockwise movement of the arm 105 allows astud 107, mounted on the arm and positioned in a slot 108 located in anoverdraft latch 109, which in turn is rotatively mounted on a stud 110secured to the pitman 104, to rock the overdraft latch clockwise. Aspring 111, mounted between a stud 112, located on the latch 109, and astud 113, mounted on the rear portion of a transfer arm 114-, rotatesthe transfer arm 114 clockwise, allowing the hook portion 115 to movebehind the cents transfer segment 116 on the amount primary rack 24, inthe manner described previously. Also connected between the stud 112 anda stud 117, located on a latch arm 118, is a spring 120. Upon theclockwise rotation of the latch 109, the latch arm 118 is rockedcockwise, thereby positioning an extension 121 in a lower step 122 ofthe latch 109, thus retaining the latch in the tripped position.

During the rotation of the cam shaft 54 (FIG. 4), a high portion 123 ofthe cam 124 rocks the pitman cam arm 125 counter-clockwise by engagingthe cam roll 126 mounted on the cam arm. This engagement drives 6 thepitman 104 to the left. This action also moves the transfer arm 114 tothe left, thus shifting the transfer segment 116 to the left. Aspreviously described, this movement adds one to the cents totalizerpinion 20, which at this time is in mesh with the transfer segment.

Upon the subsequent rotation of the cam shaft 54, a stud 127, mounted onthe cam 124, engages a restoring cam arm 128, rotatably mounted on thetransfer pitman 104. This engagement rocks the restoring cam armcounter-clockwise, resulting in movement of a restoring slide 130,slidably mounted on the pitman 104, to the right, which engages thelatch arm 118 and rocks it counterclockwise. This movement of the latcharm carries its extension 121 above the upper step of the overdraftlatch 109. At this time, the spring rocks the latch 109counter-clockwise, allowing the engagement of the latch with the stud113 of the transfer arm 114, which moves the transfer armcounter-clockwise to the position shown in FIG. 4. As the stud 127 onthe cam 124 moves away from the restoring cam arm, the restoring slide130 is moved to the left by the action of a spring 131 mounted betweenthe slide and the pitman 104. This allows the spring 120 to rotate thelatch arm 118 clockwise until the extension 121 is positioned againstthe upper step of the overdraft latch 109, as shown in FIG. 4.

After an overdraft operation has occurred, in the manner just described,a small stud 132 on the cam 55 (FIG. 1) engages the lower portion 133 ofthe transfer cam arm 56 and rocks it counter-clockwise, which action istransmitted to the transfer restoring arm 72. The restoring arm isrocked clockwise a sufficient distance against the action of the spring74 to allow the tail 75 of the arm to be moved from engagement with therestoring slide 51. This allows the restoring slide to move to the leftunder the action of the spring 68, thereby removing the lower edge 76 ofthe slide away from the transfer latch arms 32. In this position, thetransfer trip pawls 26 are free to accept transfers created by theoperation of an overdraft line 90 (FIG. 4). Further clockwise rotationof the cam 55 (FIG. 1) allows a second high portion 134 of the cam torock the transfer pitman cam arm 58 counter-clockwise, thereby shiftingthe transfer pitman to the left, which results in transfers being madein those keybanks which were tripped as a result of the overdraftoperation in the manner described previously.

As the cam 55 continues its clockwise rotation, a second stud 135(FIG. 1) mounted thereon engages a rear portion 136 of the transfer camarm 56. This engagement rocks the cam arm counter-clockwise and therestoring arm 72 clockwise a suflicient distance to allow a cam portion137 of the restoring arm to engage the transfer restoring slide anddrive it to the right, as viewed in FIG. 4. This movement of therestoring slide allows a number of cam surfaces 139, located on thelower edge of the slide, to engage each of the trip transfer latch arms32 and drive them counter-clockwise. This movement of the latch arms 32allows a lower edge portion 138 of the arm to engage a cam portion ofits associated transfer trip pawl 26, thereby positively rocking saidtrip pawl counter-clockwise. This action positions the finger 37 of thelatch arm 32 adjacent the step 38 of the trip pawl 26. Thecounter-clockwise rotation of the trip pawl also rotates the transferarm 36 (FIG. 2) out of engagement with the extension 45' of the nexthighest order transfer segment 46.

As the stud 135 moves past the cam arm 56, the spring 74 rotates therestoring arm 72 counter-clockwise, allowing the restoring slide to moveto the left under the action of the spring 68, which action moves thecam surfaces 139 of the slide from engagement with the latch arm 32. Atthis time, the spring 28 moves the finger 37 of the latch arm 32 againstthe step portion 38 of the trip pawl 26. Thus the transfer mechanism isin its home position.

While there have been shown and described and pointed out thefundamental novel features of the invention as applied to the preferredembodiment, it will be understood that various omissions, substitutions,and changes in the form and details of the device illustrated and itsoperation may be made by those skilled in the art without departing fromthe spirit of the invention. It is the intention, therefore, to belimited only as indicated by the scope of the following claims.

What is claimed is:

1. In a cash register, the combination of (a) a plurality of totalizerelements arranged in denominational order;

(b) means for selectively rotating said totalizer elements apredetermined distance;

(c) means for adding one to the next highest totalizer element when oneof said totalizer elements is rotated a predetermined distance,including (d) a control means mounted adjacent said totalizer elementand adapted to be moved to an actuated position by said totalizerelement upon movement of the totalizer element through saidpredetermined distance, the movement of said control means adding one tothe next highest totalizer element;

(e) and means operated by said control means, When moved, for holdingthe control means in its actuated position;

(f) actuating means;

(g) a drive member mounted adjacent said holding means and operated bysaid actuating means for movement to a first position and a secondposition;

(h) means mounted on said drive member for blocking the movement of saidholding means when said drive member is in said first position;

(i) and other means mounted on said drive member for actuating saidholding means when said drive member is in said second position, wherebysaid holding means and said control means are returned to their homepositions.

2. In a cash register, the combination of (a) a plurality of totalizerelements;

(b) a drive member for rotating said totalizer elements a predetermineddistance;

() a transfer mechanism for adding one to the next highest totalizerelement when one of said totalizer elements is rotated a predetermineddistance; said transfer mechanism including (d) a transfer arm adaptedto add one to the next highest totalizer element when actuated,

(e) a trip pawl connected to said transfer arm and mounted adjacent oneof said totalizer elements, said trip pawl being adapted to be moved toa tripped position upon movement of said totalizer element through saidpredetermined distance, thereby actuating said transfer arm;

(f) and a latch arm mounted adjacent said trip pawl and adapted to bemoved to an operated position by said trip pawl upon actuation of saidtrip pawl, said latch arm holding said trip pawl in its tripped positionwhen operated;

( an actuating member;

(h) a slide member mounted adjacent said latch arm and adapted to bemoved to a first and second position by said actuating member;

(i) blocking means mounted on said slide member adjacent said latch armand adapted to prevent said latch arm from movement when said slidemeans is in said first position;

(j) and cam means mounted on said slide member adjacent said trippedlatch arm and adapted to rotate said latch arm to home position when theslide member is moved to said second position, whereby said latch armengages said trip pawl and rotates it to the home position.

3. The cash register of claim 2 in which said blocking means comprises adepending extension portion of said slide member, said extension portionbeing positioned so as to block rotation of said latch arm when saidslide member is in said first position.

4. The cash register of claim 2 in which said trip pawl contains a camportion positioned adjacent said latch arm, and said cam means comprisesa depending extension portion located adjacent the latch arm when thelatch arm is in a tripped position, said extension portion engaging saidtripped latch arm and rotating it to its home position when said slidemember is moved to said second position, whereby said latch arm engagesthe cam portion of said trip pawl, rotating said trip pawl to the homeposition.

References Cited UNITED STATES PATENTS 2,628,778 2/ 1953 Goldberg235-133 2,836,362 5/1958 Ewald 235-137 3,034,716 5/1962 Thevis 235-1373,069,084- 12/ 1962 Barkas et al. 235-137 STEPHEN J. TOMSKY, PrimaryExaminer.

U.S. Cl. X.R.

